1. Maxillomandibular Fixation “The Jaw-Dropping Experience of a Lifetime”

2. Our Team From left to right… Emily Maslonkowski (BSAC) Ashley Phillips (Co-Team Leader) Nina Lewis (Co-Team Leader) Sara Karle (BWIG) Joe Ferris (Communications)

3. Client Jeremy Warner, MD  Plastic Surgery, UW Medical School

4. Advisor William Murphy  Assistant Professor, Department of Biomedical Engineering

5. Background Information Mandible is the second most fractured bone of the face Common causes of fractured mandibles 1.Assault 2.Motor vehicle accidents 3.Falls 4.Sporting accidents 3 steps in fixing a mandible: realign bones, fixation, and rehabilitation

6. Jaw Forces 3 main muscles in mastication  Masseter  Temporalis  Pterygoid Figure 1 Figure 2 Figure 3

7. Problem Statement Design a device which will:  Fixate the top of the mouth to the jaw  Be easier and faster to apply  Maintain an adequate cost of application  Be safe for the 4-6 weeks of healing

8. Motivation for Project Surgeons throughout history have dealt with broken mandibles in many ways Maxillomandibular fixation is outdated  requires wiring the mouth shut with the use of arch bars and wires

9. Our Client’s Requirements Cost effective Dynamic Emergency release Patient comfort No forces on front teeth Time effective Safe

10. Application Apply brackets with the light cured adhesive Connect brackets diagonally with rubber bands Application time: 10-20 minutes Figure 1

11. Materials and Costs 8-16 stainless steel brackets  6 mm x 2 mm x 2.5 mm  hook length: 2.5 mm 4-8 3M Unitek rubber bands GC Fuji Ortho adhesive Estimated Cost…$60 per application

12. Evaluation Pros Quick release Short application time No anesthesia necessary Aesthetically pleasing Cons Bracket detachment

13. Future Work Upgrading the brackets Biomimetic mussel adhesive Testing with light cured adhesive on a human subject Implement our design nationwide

14. References Goldman, Kim E. "Mandible Fractures." Ask An Oral & Maxillofacial Surgeon. 2005. 8 Sept. 2005. "Muscles of Mastication: Form dictates function; Function follows form." Nociceptive Trigeminal Inhibition - Tension Suppression System. 15 Sept. 2005. Peltier, Jacques, comp. Mandible Fractures. 26 May 2004. UTMB Dept. of Otolaryngology. 11 Sept. 2005. Prater, Michael E., comp. Mandibular Fractures. 27 Nov. 1996. UTMB Dept. of Otolaryngology. 20 Sept. 2005. Stierman, Karen, and Byron J. Bailey. "Mandible Fractures." 14 June 2000. 10 Sept. 2005.